42651379 has 4 divisors (see below), whose sum is σ = 43456176. Its totient is φ = 41846584.

The previous prime is 42651341. The next prime is 42651397. The reversal of 42651379 is 97315624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42651379 - 2¹¹ = 42649331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42651179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402319 + ... + 402424.

It is an arithmetic number, because the mean of its divisors is an integer number (10864044).

Almost surely, 2^42651379 is an apocalyptic number.

42651379 is a deficient number, since it is larger than the sum of its proper divisors (804797).

42651379 is an equidigital number, since it uses as much as digits as its factorization.

42651379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804796.

The product of its digits is 45360, while the sum is 37.

The square root of 42651379 is about 6530.8023243703. The cubic root of 42651379 is about 349.3904465123.

The spelling of 42651379 in words is "forty-two million, six hundred fifty-one thousand, three hundred seventy-nine".